Cloth cutting machine



(No Model.) 4 Sheets-Sheet 1 A. WARTH. GLOTH CUTTING MACHINE.

No. 380,962. Patented Apr. 10, 1888.

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Patented Apr. 10, 1888.

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(No Model.)

8 A. WARTH. CLOTH CUTTING MACHINE.

Patented Apr. 10, 1888.

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(No Model.) 4 Sheets-Sheet 4.

A. WARTH.-

CLOTH CUTTING MACHINE. No. 880,982. Patented Apr. 10, 1888.

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'NITED STATES PATENT OFFICE.

ALBIN /VABTH, OF STAPLETON, NE\V YORK.

CLOTH-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 380,962, dated April 10, 1888.

Application filed November 12, 1887. Serial No. 254,985. (No model.)

1'0 aZZ whom it may concern-.-

I end of the arm F of a double-armed lever, F G.

Be it known that I, ALBIN WARTH, a citi- Thislever has its fulcrum on apivot, d, secured zen of the United States, residing at Stapleton, in the county of Richmond and State of New York, have invented new and useful Improvements in Machines for Cutting Textile and other Materials, of which the following is a specification.

This invention relates to certain improvements in machines forcutting textile and other materials of that class which I have described in Letters Patent No. 363,705, dated May 24, 1887, said improvements being pointed out in the following specification and claims, and illustrated in the accompanying drawin s, in which- Figure 1 represents a sectional side view of a cutting-machine. Fig. 2 is a plan or top view of the same. Fig. 3 is a horizontal section in the plane as :0, Fig. 1. Fig. 4 is a sectional side view of a modification. Fig. 5 is a plan or top view of the same. Fig. 6 is a vertical. section of another modificatiomthe plane of section being indicated by the line :0 Fig. 7. Fig. 7 is a plan or top view of the same. Fig. 8 is a horizontal section in the line 2 2, Fig. 9, and looking in the directionof the arrow opposite to that line. Fig. 9 is a sectional side view of the upper portion of the machine. Fig. 10 is a horizontal section in the plane y y, Fig. 6'. Fig. 11 is a sectional side view of another modification. Fig, 12 is a plan or top vview.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates the foot-plate, from which rises a standard or pillar, B, the upper portion of which is round and guided in one of the eyes a, formed on a bracket, 0, which is secured to the outer end of an arm, 0. A'collar, 06*, retains the eye a in position on the pillar. Into the interior of the pillar Bis fitted theknife-bar D, thelower portion of which is flat, (see Figs. 3 and 10,) while its upper portion is round,or so formed that it will turn in a round hole.

In the example shown in Figs. 1, 2, and 3 the upper round portion of the knife-bar Dis made hollow,-so as to reduce its weight, and it is guided in the eye a of the bracket 0, and it extends up through said eye. On its upper end are formed circular grooves b, which engage with a toothed segment, 0, formed on the on the arm 0, and the inner end of its arm G connects by a rod, H, with the crank I on a shaft, J. This shaft has its bearings in journal-boXes e e, secured to the arm 0, and on it are mounted the fast and loose pulleys P P and theily-wheel W. On the pillarBisfirmly secured a handle, R, which serves to guide the cutting mechanism. By turning the pillar B round the knife-bar,a portion of which is flat, as already stated, is compelled to turn also without throwing the circular grooves 11 out of gear with the toothed segment 0 on the double-armed lever F G. On the arm G of this double-armed lever is secured a weight, K, to balance the weight of the knife-bar.

In the example shown in Figs. 4 and 5 the foot-plate A, the pillar B, theknife-bar D, the bracket O, and the arm 0 are'the same as the corresponding parts in Figs. 1, 2, and 3;but the double-armed lever F G is made in the form of a beil-crank lever, which engages the knil'e'bar by means of the toothed segment 0 and the circular groovcsb, 4, and to which is connected the balance-weight K. The arm G of said doublearmed lever connects by the rod H with the crank or eccentric I on the driving-shaft J.

In the example shown in Figs. 6 to 10 the double armed lever F G is connected to the crank I on the shaft J by the connecting-rod H precisely in the same manner as in the example shown in Figs. 1 and 2, and the doublearmed lever engages the knife-bar D; but the means employed for effecting this engagement are different, in order to show that the circular groovesb and toothed segment 0 (shown in Figs. 1 and 4) are not the only means which can be used to effect this engagement.

On the knife-bar D, Figs. 6 and 9, is fitted a ring, f, in which the knife-bar can freely turn, but which is confined between a fixed shoulder, g, and a collar, h, said collar being adjustable on the knife-bar by a screwthread. (See Fig. 9.) The arm F of the double-armed lever F G is bifurcated, and the ends of the fork connect by links '5 i with the ringf on the knife-bar D. By imparting. to the lever F G an oscillating motion the knife bar receives a reciprocating motion.

The pillar B, which rises from the foot-plate A, is guided in the eye a of the bracket 0, and the lower fiat end of the knife-bar D is guided in the pillar B, Fig. 10, the eye a being retained on the pillar by the collara in the same manner as in the examples heretofore de scribed; but the handle It, instead of being connected to the pillar B, is transferred above the bracket 0, and it is provided with a hub, j, which extends through the eye a of said bracket and carries a cog-wheel, k, which gears into a pinion, Z, mounted on the shaft m. This shaft has its bearings in lugs 12 a, projecting from the eyes a a of the bracket 0, and it carries a second pinion, 0, which gears into a cogwheel, p, formed on the collar a which is firmly secured to the upper end of the pillar B. The upper end of the knife-bar D is guided in and extends through the hubj of the handle B. By this arrangement I am enabled to bring the driving mechanism in direct engagement with the knife-bar and to place the handle R above the arm 0, so that said arm does not interfere with the operation of guiding the cutting mechanism, according to the contours of the patterns to be cut, and in order to keep the motion of the cutting mechanism as steady as possible the momentum of the knife-bar is balanced by the weight K.

It will be noticed that in the apparatus describedin PatentNo. 363,705, above named,the mechanism for imparting motion to the knifebar engages said knife-bar D by means of a sleeve fitted upon the pillar B. In my present application the sleeve is dispensed with, and the driving mechanism is made to engage the knife-bar directly. At the same time the momentum of theknife-loar is counteracted and balanced by the momentum of the weight K.

In the modification shown in Figs. 11 and 12 I have substituted a single-armedlever, F, for the double-armed lever F G. By referring to these figures it will be observed that all the parts represented therein are precisely the same as those represented in Figs. 6 and 7, with the only exception that the single-armed lever F, Figs. 11 and 12, connects with the crank or eccentric I at a point between its fulcrum d and its connection with the knife-bar. From the eye of the lever F extends an arm,

" G, which carries the balance-weight K.

If it is considered that in my machines the foot-plate A, which supports the cloth to be cut, moves loosely over a table, and that my machines are driven with a speed of from fifteen hundred to two thousand revolutions per minute, the importance of reducing the Weight of the moving parts will be readily understood. In my machines as previously constructed I always employed a knife-bar and a sleeve, to which a reciprocating motion is imparted and which engages the knife-bar; In my present invention the sleeve is dispensed with, and the liability to impart to the footplate a jumping motion is materially reduced.

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with the movable footplate A, the pillar B, and the knife-bar D, fitted into the pillar, of the oscillating lever directly engaging the knife-bar above the footplate, and mechanism, substantially as described, for imparting motion to said lever.

2. The combination, with the movable foot plate A, the pillar B, and the knife-bar D, fitted into the pillar, of the lever F G, directly engaging the knife-bar, the weight K, having a movement in a direction opposite to that of the knife-bar for balancing the weight of the knife-bar, and mechanism, substantially as described, for imparting motion to the doublearmed lever.

3. The combination, with the movable footplate A, the pillar B, the knife-bar D, fitted into the pillar, and the arm 0, of the bracket 0, secured to said arm, the eye a on said arm for guiding the pillar B, the eye a for guiding the upper portion of the knife-bar D, the oscillating lever having direct engagement with the knife-bar, and mechanism, substantially as described, for imparting'motion to the doublearmed lever.

4. The combination, with the movable footplate A, the pillar B, the knife-bar D, fitted into the pillar, the handle R, and the arm 0, of the bracket 0, secured to said arm, the eye a on said arm for guiding the pillar, the eye a for guiding the hub of the handle R, the shaft m, which is geared together with the hubj of the handle, and also withthe pillar B, and mechanism, substantially as described, for imparting motion to the knife-bar.

5. The combination, with the movable footplate A, the pillar B, and the knife-bar D, fitted into the pillar, of the oscillating lever, the ringf, fitted on the knife-bar and connected to said lever, and mechanism, substantially as described, for imparting motion to the lever.

In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing Witnesses.

ALBIN \VARTH. [L. s]

\Vitnesses:

W. HAUFF, E. F. KASTENHUBER. 

